Fabiana Andreina Rosales Guerrero (born 22 April 1992), also known as Fabiana Rosales de Guaidó, is a Venezuelan journalist and social media human rights activist.
She is married to Juan Guaidó, president of the National Assembly and a claimant to the country's acting presidency in the 2019 Venezuelan presidential crisis.
She is considered by the White House and the National Assembly of Venezuela as the first lady of Venezuela.